Evidence supporting the use of: Vitamin A (retinol)
For the body system: Glandular System
Synopsis
Source of validity: Scientific
Rating (out of 5): 4
Vitamin A (retinol) has a well-established scientific role in supporting various glands within the human body, particularly the thyroid, adrenal glands, and reproductive glands. Vitamin A is a fat-soluble vitamin crucial for the synthesis of steroid hormones and the regulation of gene expression in glandular tissues. For example, retinoic acid, a metabolite of vitamin A, is involved in the differentiation and function of epithelial tissues, which line many glands. Several studies have demonstrated that vitamin A is essential for normal immune function and for the maintenance of mucous membranes, including those of endocrine glands. Deficiency in vitamin A can lead to impaired immune responses and dysfunction of glands such as the thymus and adrenal cortex.
Most notably, vitamin A is required for the proper functioning of the thyroid gland. It helps regulate the synthesis and release of thyroid hormones, and deficiency may lead to hypothyroid-like symptoms. Animal and human studies have shown that vitamin A supplementation can improve thyroid function in cases of deficiency. Furthermore, vitamin A's role in reproductive health, particularly in the testes and ovaries, is well documented. It is required for spermatogenesis and for maintaining the health of ovarian tissues.
In summary, Vitamin A's use in supporting the glandular system is backed by a substantial body of scientific evidence, particularly regarding its roles in hormone synthesis, immune modulation, and the maintenance of glandular epithelium.
Other ingredients that support Glandular System
7-Keto-DHEAadrenal cortex
alfalfa
amino acids
ashwagandha
astragalus
waterhyssop
basil
black cohosh
sesame
bovine
bovine kidney
bovine liver
bovine pancreas
broccoli
brussel sprouts
bupleurum falcatum
bасора
caterpillar mushroom
chaga mushroom
chaste tree
cinnamon
coenzyme Q10 (CoQ10)
colostrum
Coptis chinensis
cordyceps
cowage seed
turmeric
turmeric
dandelion
DHEA (dehydroepiandrosterone)
DIM (diindolylmethane)
dong quai root
eleuthero
fennel
forskohlii root
fruit and vegetable blend (proprietary)
gamma linolenic acid (GLA)
garlic bulb
ginseng
gokhru
gooseberry
greek mountain tea
onion
green tea
greens blend (proprietary)
guayusa
guggul
iodine
iron
jujube
kale
kelp
l-tryptophan
l-tyrosine
lavender
licorice root
linoleic acid (LA)
liquid liver fractions
lophatherum leaf
maca
magnesium
maitake mushroom
manganese
melatonin
milk thistle
moringa
motherwort
nettle
niacin (vitamin B3)
oleanolic acid
omega-6 fatty acids
pantothenic acid (vitamin B5)
parsley
phytocannabinoids
pregnenolone
protein
pumpkin
pyridoxal-5-phosphate (P-5-P)
rehmannia glutinosa
reishi mushroom
rhodiola
riboflavin (vitamin B2)
rose oil
sage
saw palmetto
scrophularia root
selenium
soybean
tongkat ali
tribulus
vegetable blend (proprietary)
velvet bean
vitamin A
vitamin B
vitamin B6
vitamin C
vitamin D
vitamin D3
vitamin E
seaweed
water
watercress
wheat grass
whole adrenal glandular
wild yam
zinc
β-nicotinamide mononucleotide (NMN)
red clover
suma
jiaogulan
gastrodia
capsicum
hedychium spicatum
tinospora cordifolia
bee pollen
lingzhi
dioscorea
eucommia
ganoderma
lotus seed
oriental arborvitae
royal jelly
polyphenols
trace minerals
anemarrhena asphodeloides
noni
hypothalamus
herbal blend (proprietary)
algae
thyroid substance
ashitaba
bladderwrack
7,8-Dihydroxyflavone
Aralia
Antler
Anamarrhena
Ajuga
Ascophyllum nodosum
Asteracea
Acemannan
Agnuside
Ashoka
Anemarrhena
Animal protein
Blue Cohosh
Black Seed
Babchi
Bidens pilosa
Brown Algae
Brassica
Beef
Beef liver
Barleria
Berberis (unspecified)
Bovine Protein
Bulbine natalensis
Brazil nut
Banyan
Barbasco
Bee products
Babassu
Bupleurum
Camellia sinensis
Cinnamomum
Clary sage
Chinese Mountain Ant
Cucurbita
Cod Liver Oil
Codonopsis
Cruciferous
Cyanotis Vaga
Chinese Thoroughwax
Ceanothus integerrimus
Celastrus
Canscora
Didymocarpus
DHEA
Dendrobium
diiodotyrosine
Deer Velvet
Dong Quai
Diosgenin
Devil's Club
Dwarf Morning Glory
Elk antler
Essential Oil Blend
Eucommia ulmoides
False Unicorn Root
Himalayan Salt
jasmine
Molasses
Sandalwood
Vervain
Other body systems supported by Vitamin A (retinol)
BloodDigestive System
Eyes
Glandular System
Immune System
Intestinal System
Lungs
Mucus Membranes
Reproductive System
Respiratory System
Skin
Small Intestines
Thymus